JP3143138U - Alarm - Google Patents

Abstract

The present invention provides an alarm device capable of promptly issuing an interlocking alarm by suppressing an alarm delay on a receiving side due to intermittent reception.
A receiving circuit 44 intermittently performs a receiving operation at a predetermined reception period set in advance to guarantee battery life and receives an event signal from another alarm device. Based on the setting operation of the reception cycle setting switch 62, the reception cycle control unit 60 changes the reception cycle of the reception circuit 44 to a shorter cycle, and suppresses the delay time of the interlocking alarm within the intermittent reception cycle.
[Selection] Figure 3

Description

The present invention relates to an alarm device that detects an abnormality such as a fire and issues an alarm and wirelessly transmits a signal to another alarm device to output an alarm in conjunction with the alarm device.

  Conventionally, residential alarm devices (hereinafter referred to as “residential alarms”) that detect and warn of abnormalities such as fires and gas leaks in homes have become widespread. There is also an increasing tendency to monitor the anomalies such as fires in each room by installing a vessel.

  In this way, when a plurality of house alarms are installed in a dwelling unit, if a person is in a room different from the room where the abnormality has occurred, a warning sound may not be heard and a disaster such as a fire may spread. For this reason, when the house alarm devices are connected to each other by wire and a fire is detected and alarmed by a certain house alarm device, an interlocking alarm that sends a signal to another house alarm device and simultaneously issues an alarm is made possible.

  However, there is a problem in that the cost of the connection between the resident alarms is high due to the necessity of wired work. This problem can be solved by using a wireless residence guard. In addition, with the recent reduction in power consumption of ICs for wireless circuits, even in an operation state in which signals can be received at all times in order to be able to receive signals from other home alarm devices, for example, more than 5 years can be put into practical use. The endurance of battery life is guaranteed, and the environment for practical use of wireless home alarms is getting ready.

  By the way, in the case of a wireless residence guard, since it is not known when a signal indicating an abnormality is transmitted from another residence guard, it is necessary to keep the receiving circuit unit in a standby operation state so that the signal can be received at any time. However, since this increases power consumption, the reception operation is intermittently performed every predetermined reception cycle.

  FIG. 5 is a time chart showing a transmission operation and a reception operation of a conventional wireless residential alarm. As shown in FIG. 5 (B), the reception-side residence guard performs an intermittent reception operation with a period T12 (= T1 + T2) in which the reception operation for T1 time is repeated with a pause time of T2 hours. On the other hand, as shown in FIG. 5 (A), the transmission side resident alarm continuously and repeatedly transmits a detection signal indicating the abnormality for T4 time.

  Here, the transmission time T4 is set to a time equal to or longer than the intermittent reception cycle T12 (= T1 + T2), and reception is performed for at least one T1 time during the transmission time T4 regardless of the transmission start timing. The operation time is entered, so that the signal from the transmission side home alarm can be reliably received.

Such intermittent reception operation eliminates the need for the reception circuit unit to always be in a standby operation state, and the current consumption of the reception circuit unit is reduced, so that even a wireless home alarm device has a battery life of more than 5 years. Can be guaranteed.
JP 2007-094719 A

  However, in the case of a wireless mortgage that performs such an intermittent reception operation, depending on the timing at which the transmission resident alarm starts transmitting a signal, it receives the alarm signal from the transmitting resident alarm. There is a case where the start of the interlocking alarm based on the reception of the signal by the side home alarm is greatly delayed.

  FIG. 5 shows the timing immediately after the reception operation for the time T1 in the reception side resident alarm, when the transmission side resident alarm starts signal transmission. At this transmission start timing, the next reception operation is performed. After T2 time, there is a problem that the delay time Td from the start of the alarm on the transmission side to the start of the interlock alarm on the reception side becomes longer, and the interlock alarm is delayed.

  For example, the intermittent reception pause time T2 is about 10 to 20 seconds. Further, in order to improve the reliability, when a method of alarming by receiving three times is adopted, the receiving side starts the alarm after the transmitting side starts the alarm. The delay time Td until the alarm is started takes about 30 to 60 seconds, and the interlocking alarm is greatly delayed.

SUMMARY OF THE INVENTION An object of the present invention is to provide an alarm device that can quickly perform an interlocking alarm by suppressing an alarm delay on the receiving side due to intermittent reception.

The present invention
A receiving circuit unit that receives an event signal from another alarm device by intermittently performing a receiving operation every predetermined reception cycle;
A transmission circuit unit that transmits an event signal to another alarm device over a transmission time equal to or longer than the reception cycle;
A sensor unit for detecting an abnormality,
An alarm unit for outputting an alarm provided separately or integrally with the alarm device; and
Upon receiving an abnormality detection signal from the sensor unit, an abnormality alarm of the linkage source is output, and an event signal indicating abnormality is transmitted to another alarm device, while an event signal indicating abnormality is received from another alarm device. An abnormality monitoring unit that sometimes outputs an abnormality alarm for the linked destination,
In the alarm device provided with
A reception cycle control unit is provided that changes the reception cycle of the reception circuit unit to a short cycle by a predetermined setting operation.

  According to the alarm device of the present invention, for example, when a user performs a predetermined switch operation at the start of use of the alarm device, the intermittent reception cycle is changed from the initial reception cycle to a shorter reception cycle, and an abnormality occurs. When an event signal indicating is received, regardless of the timing of the transmission start on the receiving side, the intermittent reception cycle in which the maximum delay time from the alarm start on the transmitting side to the alarm start on the receiving side is shortened The delay of the interlocking alarm can be minimized.

In other words, the alarm device of the present invention is initially set to an intermittent reception cycle that guarantees a sufficiently long battery life, but depending on the user, rather than ensuring the battery life, the usage method that minimizes the delay of the interlocking alarm as much as possible In this way, the intermittent reception cycle can be set to a shorter cycle according to the user's judgment for the usage form, and it is possible to appropriately respond to the user's request to reduce the delay of the interlocking alarm.

  FIG. 1 is an explanatory view showing the appearance of a wireless residence guard according to the present invention. FIG. 1 (A) shows a front view and FIG. 1 (B) shows a side view.

  In FIG. 1, the residential alarm 10 according to the present embodiment includes a cover 12 and a main body 14. In the center of the cover 12, a smoke detector 16 having a smoke inlet is opened around it, and a fire is detected when smoke from the fire reaches a predetermined concentration.

  An acoustic hole 18 is provided on the lower left side of the smoke detector 16 provided in the cover 12, and a speaker is built in behind this so that an alarm sound or voice message can be output. An alarm stop switch 20 is provided below the smoke detector 16. The alarm stop switch 20 also functions as an inspection switch.

  An LED 22 is arranged inside the alarm stop switch 20 as indicated by a dotted line. When the LED 22 is lit, the LED 22 is lit through the switch cover portion of the alarm stop switch 20 so that the lighting state of the LED 22 can be seen from the outside. Yes.

  Also, a mounting hook 15 is provided on the upper back side of the main body 14, and a screw or the like is screwed into the wall of the room to be installed, and the mounting hook 15 is attached to this screw, so that the residential alarm 10 can be installed on the wall surface. it can.

  In addition, in the residential alarm 10 of FIG. 1, although the residential alarm which detects the smoke by the fire provided with the smoke detection part 16 is taken as an example, the thermistor which detects the heat by a fire other than this is equipped. House alarms and house alarms that detect gas leaks other than fire are also included in the scope of the present invention.

  FIG. 2 is an explanatory diagram showing the installation state of the house alarm of the present embodiment with respect to the house. In the example of FIG. 2, the residence guards 10-1 to 10-4 of the present embodiment are installed in the kitchen, living room, main bedroom, and child room provided in the house 24, and are further built outdoors. Also installed in the garage 26 is a residence guard 10-5.

  Each of the home alarm devices 10-1 to 10-5 has a function of transmitting and receiving event signals wirelessly to each other, and constitutes one group with five home alarm devices 10-1 to 10-5. The entire house is being monitored for fire.

  If a fire has occurred in the child's room of the house 24, the residence guard 10-4 detects the fire and starts an alarm. Detecting this fire and initiating an alarm is referred to as “reporting” at the home alarm. When the resident alarm 10-4 is triggered, the resident guard 10-4 functions as an interlocking source, and fires are issued to the other resident alarms 10-1 to 10-3 and 10-5 that are the interlocking destinations. An event signal indicating is transmitted by radio. In the other home alarm devices 10-1 to 10-3, 10-5, when receiving an event signal indicating a fire alarm from the home alarm device 10-4 as the interlock source, the alarm operation as the interlock destination is performed. Do.

  Here, as the alarm sound of the home alarm device 10-4 that is the link source, for example, “Please confirm that the Woo fire alarm has been activated” is continuously output by voice message. On the other hand, in the linked home alarm devices 10-1 to 10-3 and 10-5, a voice message such as “Please confirm that another fire alarm has been activated” is output continuously. . When the alarm stop switch 20 provided in the residence guard shown in FIG. 1 is operated in a state in which the residence guards 10-1 to 10-5 are emitting an alarm sound, a warning sound stop process is performed.

  The home alarm devices 10-1 to 10-5 have a failure monitoring function. When a failure is detected, for example, an alarm sound such as “beep” is intermittently output every predetermined time to notify that a failure has occurred. . In addition, the fault resident alarm device that detected the fault wirelessly transmits an event signal indicating the occurrence of the fault to the other resident alarm devices, and the same fault alarm is output also in the other resident alarm devices. As a result, when a failure is detected in any residential alarm, a failure alarm is output from all the residential alarms constituting the group that performs the interlocking alarm.

  The failure alarm output from the home alarm can be stopped by operating the alarm stop switch 20. In the present embodiment, the failure to be detected and alarmed by the residential alarm is mainly a low battery alarm that detects and alarms the decrease in battery voltage. Includes fault alerts.

  Furthermore, in the housing alarm devices 10-1 to 10-5 of the present embodiment, at the start of use of the housing alarm devices 10-1 to 10-5, if necessary, to suppress the delay of the interlocking alarm, By performing a predetermined switch operation, the intermittent reception period during use can be changed from a preset period to a shorter period.

  FIG. 3 is a block diagram showing a first embodiment of a residential alarm according to the present invention. FIG. 3 shows in detail the circuit configuration of the five home guards 10-1 to 10-5 shown in FIG.

  The home guard 10-1 includes a CPU 28, and a radio circuit unit 30, a recording circuit unit 32, a sensor unit 34, a notification unit 36, an operation unit 38, and a battery power source 40 including an antenna 31 are provided for the CPU 28. .

  The wireless circuit unit 30 is provided with a transmission circuit 42 and a reception circuit 44 so that event signals can be transmitted and received wirelessly between the other mortgages 10-2 to 10-5. As the radio circuit unit 30, in the case of Japan, for example, STD-30 (standard standard of radio equipment of a low power security system radio station) or STD- known as a standard of a specific low power radio station of 400 MHz band or STD- It has a configuration compliant with T67 (standard specification for specific low-power radio station telemeter, telecontrol and data transmission radio equipment).

  Of course, the radio circuit unit 30 has contents conforming to the standard of the assigned radio station in the area in places other than Japan.

  The reception circuit 44 performs an intermittent reception operation. The intermittent reception operation of the reception circuit 44 is intermittent reception of a period T12 (= T1 + T2) in which a pause time of T2 = 10 seconds, for example, is placed following a reception operation time of T1 = 5 milliseconds, for example. Corresponding to this intermittent reception, the transmission circuit 42 continuously transmits the event signal for a time T4 that is equal to or longer than the intermittent reception cycle T12 (= T1 + T2).

  The intermittent reception cycle T12 of the reception circuit 44 is a cycle determined at the design stage of the home alarm device so as to have an average current consumption for securing a battery life of, for example, 10 years, and a default cycle set at the shipment stage. It has become.

  Further, the receiving circuit 44 of the present embodiment operates a reception alarm setting switch 62 provided in the operation unit 38 at the start of use of a default intermittent reception period T12 that is set in advance. The delay can be changed to a short intermittent reception cycle T13 for suppressing the delay.

  The recording circuit unit 32 is provided with a memory 46. The memory 46 stores a transmission source code 50 that is an ID (identifier) for identifying a house alarm, and a group code 52 for configuring a group that performs a linked alarm with a plurality of house alarms as shown in FIG. Yes. As the transmission source code 50, the number of home guards provided in the country is predicted, and for example, a 26-bit code code is used so as not to be duplicated as the same code.

  The group code 52 is a code that is set in common to a plurality of residential alarms constituting the group, and the group code included in the event signal from the other residential alarm received by the wireless circuit unit 30 is registered in the memory 46. This event signal is received as a valid signal and processed when the group code 52 matches.

  In this embodiment, the memory 46 is used for the recording circuit unit 32. However, a dip switch is provided instead of the memory 46, and the transmission source code 50 and the group code 52 are set by the dip switch. Also good. When the code length (number of bits) of the transmission source code 50 and the group code 52 is small, the recording circuit unit 32 using a dip switch is desirable.

  In the present embodiment, the sensor unit 34 is provided with the smoke detector 16, and outputs a smoke detection signal corresponding to the smoke density to the CPU 28. In addition to the smoke detector 16, the sensor unit 34 may be provided with a thermistor that detects a temperature due to a fire. In the case of a gas leak monitoring residence guard, a gas leak sensor is provided in the sensor unit 34.

  The notification unit 36 is provided with a speaker 56 and an LED 22. The speaker 56 outputs a voice message and an alarm sound from a voice synthesis circuit unit (not shown). The LED 22 displays an abnormality or failure such as a fire by blinking, blinking, or lighting.

  The operation unit 38 is provided with an alarm stop switch 20 and a reception cycle setting switch 62. When the alarm stop switch 20 is operated, the alarm sound flowing from the residential alarm 10-1 can be stopped. The alarm stop switch 20 also serves as an inspection switch in the present embodiment.

  The alarm stop switch 20 is effective when an alarm sound is output from the notification unit 36 through the speaker 56. On the other hand, the alarm stop switch 20 functions as an inspection switch in a normal monitoring state in which no alarm sound is output. When the inspection switch is pressed, a notification voice message or the like is output from the notification unit 36.

  The reception cycle setting switch 62 instructs the change to a short intermittent reception cycle T13 for suppressing the delay of the interlocking alarm by operating when the user starts using the house alarm.

  The battery power supply 40 uses, for example, an alkaline dry battery having a predetermined number of cells, and has a battery capacity of about 10 years due to a reduction in power consumption of the entire circuit unit including the wireless circuit unit 30 in the residential alarm 10-1. The lifetime is guaranteed.

  The CPU 28 is provided with an abnormality monitoring unit 58 and a reception cycle control unit 60 as functions realized by executing the program.

  When the smoke detection signal from the smoke detector 16 provided in the sensor unit 34 exceeds the fire level and detects a fire, the abnormality monitoring unit 58 generates an alarm sound indicating the interlock source from the speaker 56 of the notification unit 36, for example, “Woo-woo” “Please check that the fire alarm has been activated” repeatedly, and an event signal indicating the fire alarm is transmitted from the antenna 31 to the other residential alarm devices 10-2 to 10-5 by the transmission circuit 42 of the radio circuit unit 30. To send to.

  In addition, when the abnormality monitoring unit 58 receives an event signal indicating a fire alarm from any of the other home alarm devices 10-2 to 10-5 by the reception circuit 44 of the wireless circuit unit 30, the notification unit 36 An alarm sound indicating the link destination, for example, “Woooo Check if another fire alarm has been activated” is continuously output from the speaker 56.

  Here, when the abnormality monitoring unit 58 detects a fire alarm and outputs an interlocking source alarm sound, for example, the LED 22 of the notification unit 36 is blinked, while when the interlocking destination alarm sound is output, the LED 22 of the notification unit 36 is displayed. Blinks. Thereby, the display of the LED 22 in the interlocking source alarm and the interlocking destination alarm can be distinguished. Of course, the blinking or flashing display of the same LED 22 may be used for both the interlocking source alarm and the interlocking destination alarm.

  In addition, when the abnormality monitoring unit 58 detects a low battery due to a voltage drop of the battery power supply 40 as a failure, for example, once every minute, the abnormality monitoring unit 58 outputs a failure warning sound by outputting a short low battery warning sound such as “beep”. Then, an event signal indicating a failure is transmitted to the other residential alarm devices 10-2 to 10-5.

  In addition, when the abnormality monitoring unit 58 receives an event signal indicating a failure from any of the other dwelling devices 10-2 to 10-5, the failure monitoring unit 58 similarly outputs a low battery warning sound in the same manner, thereby causing a failure warning. Performs synchronized output of sound. Regarding the alarm at the low battery interlocking destination, the LED 22 may be blinked in synchronization with the alarm sound.

  The reception cycle control unit 60 is provided in the operation unit 38 during the initialization process of the CPU 28 immediately after the battery power supply 40 is validated (turned on). For example, the switch state of the reception cycle setting switch 62 using a dip switch or the like, that is, the switch signal state of cycle setting OFF or cycle setting ON is read. If the cycle setting is OFF, the preset intermittent reception cycle T12 is set. If the cycle setting is ON, the preset intermittent reception cycle T12 is changed to a shorter intermittent reception cycle T13.

  FIG. 4 is an explanatory diagram showing the format of the event signal used in this embodiment. In FIG. 4, the event signal 48 includes a transmission source code 50, a group code 52, and an event code 54. The transmission source code 50 is a 26-bit code, for example. The group code 52 is, for example, an 8-bit code, and the same group code is set for, for example, the five residential alarm devices 10-1 to 10-5 in FIG.

  In addition, as the group code 52, in addition to setting the same group code to the same group of house alarms, a reference code common to the house alarms constituting a predetermined group, and a transmission source unique to each house alarm A different group code may be used for each residential alarm obtained from the calculation with the code.

  The event code 54 is a code representing an event content such as an abnormality or failure such as a fire or a gas leak. In the present embodiment, a 3-bit code is used. For example, “001” indicates a fire and “010” indicates a fire. Gas leak, “011” indicates failure, and the rest is reserved.

  Note that the number of bits of the event code 54 can be increased to 4 bits and 5 bits when the type of event is increased, thereby representing a plurality of types of event contents.

  FIG. 5 is a time chart showing operations on the transmission side and the reception side according to the preset intermittent reception cycle T12 in the present embodiment. FIG. 5 (A) shows the transmission operation of the transmission side resident alarm, and FIG. 5 (B) shows the reception operation of the reception side resident alarm.

  5B, in the normal monitoring state, intermittent reception operation is performed with an intermittent reception cycle T12 (= T1 + T2) including the initially set reception operation time T1 and pause time T2. The reception operation time T1 is, for example, T1 = 5 milliseconds, the stop time T2 is, for example, T2 = 10 seconds, and therefore the intermittent reception cycle T12 is T12 = about 10 seconds.

  In this state, suppose that the transmitting side house alarm shown in FIG. 5 (A) fires at time t1 immediately after the reception operation period, for example, and starts transmitting an event signal indicating the fire alerting. The information event signal is received by the receiving operation from time t2 when the pause time T2 has elapsed from time t1, and the receiving side home alarm device outputs an alarm as shown in FIG.

  The interlocking delay time Td1 in this case is a time within the pause time T2 in the intermittent reception, for example, Td1 = about 10 seconds.

  FIG. 6 is a time chart showing the operation on the transmission side and the reception side when the preset intermittent reception cycle T12 in this embodiment is changed to a shorter intermittent reception cycle T13. FIG. FIG. 6 (B) shows the receiving operation of the receiving side resident alarm device.

  6B, in response to the setting change operation of the reception cycle, the intermittent reception operation is performed with the intermittent reception cycle T13 (= T1 + T3) including the reception operation time T1 and the pause time T3. The reception operation time T1 is, for example, T1 = 5 milliseconds, and the stop time T3 is, for example, T3 = 3 seconds.

  The interlocking delay time Td2 in this case is a time within the pause time T3 in the shortened intermittent reception cycle T13, for example, Td2 = about 3 seconds.

FIG. 7 is a time chart showing the relationship between the intermittent reception period and the average current consumption in the present embodiment. FIG. 7A shows an intermittent reception operation in a preset intermittent reception cycle T12 before change. In this case, the average current Ia1 is Ia1 = (Ir × T1) / T12.
Given in.

FIG. 7B shows a case where the intermittent reception cycle T12 is changed to a short intermittent reception cycle T13 based on the setting operation, and the average current consumption Ia2 in this case is Ia2 = (Ir × T1) / T13.
Given in.

  For this reason, the intermittent reception period T12 is changed to a short intermittent reception period T13 by the user's operation, so that the time delay of the interlocking alarm is suppressed, but the average current of the reception circuit increases from Ia1 to Ia2. Become.

  FIG. 8 is a flowchart showing the fire monitoring process by the CPU 28 provided in the residential alarm 10-1 of FIG. In FIG. 9, when the battery power supply of the home alarm is enabled (turned on), an initialization process is performed in step S21. Subsequently, the switch state of the reception cycle setting switch 62 provided in the operation unit 38 is read. If the setting is on, it is determined that there is a reception cycle setting operation, and the process proceeds to step S3. The set cycle T12 is changed to a shorter cycle T13.

  On the other hand, when the switch state of the reception cycle setting switch 62 is set to OFF, the process proceeds to step S4, and the intermittent reception cycle is maintained at the initially set T12.

  Subsequently, the home alarm enters a monitoring state, and in step S5, the presence or absence of a fire alarm is determined by the smoke detector 16 provided in the sensor unit 32. When a fire alarm is determined, the process proceeds to step S6. After transmitting the event signal of the fire alarm to the other residential alarm devices 10-2 to 10-5, in step S7, the fire alarm of the linkage source is output by the sound output from the speaker 56 of the notification unit 36 and the lighting control of the LED 22 To do.

  After performing the fire alarm of the interlocking source, it is determined whether or not there is an alarm stop operation by the alarm stop switch 30 in step S8. If there is an alarm stop operation, the alarm stop is performed in step S9.

  On the other hand, if a fire alarm is not determined in step S5, the process proceeds to step S10, where it is determined whether or not a fire alarm event signal has been received from another house alarm, and the event signal of the fire alarm is determined. If reception is discriminated, a fire alarm at the link destination is output in step S11.

  At this time, if the intermittent reception cycle is initially set to T12, as shown in the time chart of FIG. 5, the delay time Td1 of the interlocking alarm is within Td1 = about 10 seconds corresponding to the pause time T2, When the intermittent reception cycle is changed to T13, as shown in the time chart of FIG. 6, the delay time Td2 of the interlocking alarm can be shortened within Td2 = about 3 seconds corresponding to the pause time T3.

  Subsequently, the process proceeds to step S8, and if there is an alarm stop operation, the alarm is stopped in step S9.

  Note that the setting change to a short intermittent reception cycle can be performed for all or some of the residential alarms constituting the interlocking group shown in FIG. 2 and FIG. It is possible to realize a usage method in which the intermittent reception cycle is changed to a short cycle for 10-2, and the delay of the interlocking alarm is minimized when the fire alarm is issued in another room.

  In addition, the above embodiment is an example of a residential alarm for fire detection, but other appropriate abnormalities such as a gas leak alarm and a security alarm are detected. For the alarm device, the monitoring process including the preliminary abnormality of the present embodiment can be applied as it is. It can also be applied to alarm devices for various purposes such as buildings and offices, not limited to residential use.

  Moreover, although said embodiment took the case where the sensor part was integrally provided in the alarm device as an example, as another embodiment, it is an alarm device provided with the sensor part as a separate body from the residential alarm device. Also good.

The present invention is not limited to the above embodiment, includes appropriate modifications without impairing the object and advantages thereof, and is not limited by the numerical values shown in the above embodiment.

Explanatory drawing showing the appearance of a house alarm device according to the present invention Explanatory diagram showing the installation state of the house alarm for the house The block diagram which showed the embodiment of the residence guard by this invention Explanatory drawing showing the format of the event signal used in this embodiment Time chart showing operations on the transmission side and reception side in the initially set intermittent reception cycle in this embodiment Time chart showing the operation on the transmission side and reception side when the intermittent reception cycle is changed to a short cycle in this embodiment Time chart showing the relationship between the intermittent reception period and average current consumption in this embodiment Time chart showing fire monitoring process with interlocking alarm according to this embodiment Time chart showing the operation of the transmitting side and the receiving side in a conventional wireless mortgage Time chart showing the transmission timing that maximizes the delay in alarm reception on the receiving side

Explanation of symbols

10, 10-1 to 10-5: House alarm 12: Cover 14: Main body 15: Mounting hook 16: Smoke detector 18: Sound hole 20: Alarm stop switch 22: LED
24: Housing 26: Garage 28: CPU
30: Radio circuit unit 31: Antenna 32: Recording circuit unit 34: Sensor unit 36: Notification unit 38: Operation unit 40: Battery power source 42: Transmission circuit 44: Reception circuit 46: Memory 48: Event signal 50: Source code 52 : Group code 54: Event code 56: Speaker 58: Abnormality monitoring unit 60: Reception cycle control unit 62: Reception cycle setting switch

Claims (1)

A receiving circuit unit that receives an event signal from another alarm device by intermittently performing a receiving operation every predetermined reception cycle;
A transmission circuit unit that transmits an event signal to another alarm device over a transmission time equal to or longer than the reception cycle;
A sensor unit that is provided separately or integrally with the alarm device and detects an abnormality,
A notification unit for outputting an alarm;
Upon receiving an abnormality detection signal from the sensor unit, an abnormality alarm of the linkage source is output, and an event signal indicating abnormality is transmitted to another alarm device, while an event signal indicating abnormality is received from another alarm device. An abnormality monitoring unit that outputs an abnormality alarm at the interlocking destination when
In the alarm device provided with
An alarm device comprising: a reception cycle control unit that changes a reception cycle of the reception circuit unit to a short cycle by a predetermined setting operation.

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